/* Base Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Enhanced Color System */
    --primary-color: #4CAF50;
    --primary-hover: #43A047;
    --primary-light: #E8F5E9;
    --primary-dark: #2E7D32;

    /* Neutral Colors */
    --text-primary: #1A1A1A;
    --text-secondary: #4A4A4A;
    --text-tertiary: #757575;

    /* Background Colors */
    --background-primary: #FFFFFF;
    --background-secondary: #F5F7FA;
    --background-tertiary: #EDF2F7;
    --message-bot-bg: #f8f9ff;
    --message-user-bg: var(--primary-color);
    --message-user-gradient: linear-gradient(135deg, var(--primary-color) 0%, #43a047 100%);

    /* Border & Shadow */
    --border-color: #E2E8F0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.05), 0 4px 6px rgba(0, 0, 0, 0.1);

    /* Animation */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Layout */
    --widget-width: min(480px, calc(100% - 40px));
    --widget-height: min(720px, calc(100vh - 80px));
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;

    /* Message Colors */
    --message-bg-bot: var(--message-bot-bg);
    --message-bg-user: var(--message-user-gradient);
    --message-text-bot: var(--text-primary);
    --message-text-user: #FFFFFF;

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-family-messages: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --line-height-tight: 1.4;
    --line-height-normal: 1.6;
    --letter-spacing-tight: -0.01em;
    --letter-spacing-normal: 0;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* Enhanced Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--background-primary);
}

/* Focus Styles for Accessibility */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Chatbot Container */
.chatbot-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: var(--widget-width);
    height: var(--widget-height);
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    transition: all var(--transition-normal);
    z-index: 1000;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transform-origin: bottom right;
}

/* Chatbot Header */
.chatbot-header {
    background: var(--background-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    min-height: 64px;
    position: relative;
}

.header-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-sm);
    object-fit: contain;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.4);
}

.header-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.header-text h2 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.status {
    font-size: var(--font-size-sm);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
}

.status::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s infinite;
}

.header-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.icon-button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.icon-button:hover {
    background: var(--background-secondary);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.icon-button:active {
    transform: translateY(0);
}

.icon-button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Chatbot Messages */
.chatbot-messages {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    background: var(--background-primary);
    gap: var(--spacing-md);
    -webkit-overflow-scrolling: touch;
    scroll-padding-bottom: var(--spacing-xl);
}

.welcome-message {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
    /* set up a 3D space for children */
    perspective: 800px;
}

.welcome-content {
    max-width: 350px;
    background: var(--background-primary);
    padding: 18px 12px;
    border-radius: 22px;
    border: 1.5px solid var(--border-color);
    box-shadow: 0 4px 24px rgba(30, 80, 60, 0.10), 
                0 1.5px 6px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: visible;
    
    /* enable proper 3D transforms */
    transform-style: preserve-3d;
    transform-origin: center center;
    
    /* smooth transitions */
    transition: transform 0.5s cubic-bezier(.22,1,.36,1),
                box-shadow 0.5s cubic-bezier(.22,1,.36,1);
    will-change: transform, box-shadow;
    text-align: center;
    align-items: center;
    display: flex;
    flex-direction: column;
}

.welcome-content:hover,
.welcome-content.active {
    /* lift directly toward the viewer and scale up */
    transform: translateZ(24px) scale(1.05);
    
    /* deepen the shadow for extra “lift” effect */
    box-shadow: 0 16px 40px rgba(30, 80, 60, 0.18),
                0 2px 8px rgba(0, 0, 0, 0.13);
}
.welcome-logo {
    margin-bottom: 12px;
    width: 60px !important;
    height: 60px !important;
}

@keyframes bounce {
    0% { transform: rotate(0deg); }
    25% { transform: rotate(45deg); }
    75% { transform: rotate(-45deg); }
    100% { transform: rotate(0deg); }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.welcome-content h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
}

.welcome-content p {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: var(--text-secondary);
    line-height: var(--line-height-normal);
}

.welcome-extra-info {
    opacity: 0;
    max-height: 0;
    overflow: visible;
    transition: opacity 0.4s, max-height 0.4s;
    pointer-events: none;
    margin-top: 0;
}

.welcome-content:hover .welcome-extra-info,
.welcome-content.active .welcome-extra-info {
    opacity: 1;
    max-height: none;
    pointer-events: auto;
    margin-top: 10px;
    overflow: visible;
}

.welcome-extra-info ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.welcome-extra-info li {
    text-align: center;
    justify-content: center;
    font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
    font-size: 0.92rem;
    color: var(--text-secondary);
    opacity: 0.75;
    margin-bottom: 4px;
    letter-spacing: 0.01em;
    line-height: 1.3;
    display: flex;
    align-items: baseline;
}

.welcome-extra-info .info-label {
    font-weight: 600;
    color: var(--primary-color);
    font-family: 'Montserrat', 'Segoe UI', Arial, sans-serif;
    margin-right: 5px;
    opacity: 0.9;
    letter-spacing: 0.02em;
}

/* Chat Bubbles */
.chatbot-message, .user-message {
    max-width: min(85%, 420px);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 1px 0;
    border-radius: var(--border-radius-md);
    font-family: var(--font-family-messages);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    word-wrap: break-word;
    animation: messageAppear 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* When message contains items list, expand width */
.chatbot-message.has-items {
    max-width: min(92%, 300px);
    width: 100%;
}

.chatbot-message {
    background: #fff; /* Clean, card-like white */
    border: 1px solid #e5e7eb; /* Subtle border */
    box-shadow: 0 4px 24px rgba(30, 41, 59, 0.10), 0 1.5px 4px rgba(30, 41, 59, 0.06); /* Soft, elevated shadow */
    border-radius: 18px; /* Thicker for card feel */
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--message-text-bot);
    word-break: break-word;
    animation: chatbotPopIn 0.45s cubic-bezier(0.23, 1, 0.32, 1);
    transition: box-shadow 0.25s cubic-bezier(0.23, 1, 0.32, 1), transform 0.25s cubic-bezier(0.23, 1, 0.32, 1);
}

.chatbot-message:hover {
    box-shadow: 0 8px 32px rgba(30, 41, 59, 0.16), 0 3px 12px rgba(30, 41, 59, 0.10);
    transform: translateY(-2px) scale(1.015) perspective(600px) rotateX(1deg);
}

@keyframes chatbotPopIn {
    0% {
        opacity: 0;
        transform: scale(0.96) translateY(18px) perspective(600px) rotateX(6deg);
        box-shadow: 0 0 0 rgba(30, 41, 59, 0);
    }
    80% {
        opacity: 1;
        transform: scale(1.02) translateY(-2px) perspective(600px) rotateX(0.5deg);
        box-shadow: 0 8px 32px rgba(30, 41, 59, 0.13);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0) perspective(600px) rotateX(0deg);
        box-shadow: 0 4px 24px rgba(30, 41, 59, 0.10), 0 1.5px 4px rgba(30, 41, 59, 0.06);
    }
}

.user-message {
    background: var(--primary-color); /* Theme green */
    border: 1px solid #388e3c; /* Slightly darker green for border */
    box-shadow: 0 4px 24px rgba(76, 175, 80, 0.13), 0 1.5px 4px rgba(76, 175, 80, 0.08);
    border-radius: 18px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: #fff; /* White text for contrast */
    word-break: break-word;
    align-self: flex-end;
    animation: chatbotPopIn 0.45s cubic-bezier(0.23, 1, 0.32, 1);
    transition: box-shadow 0.25s cubic-bezier(0.23, 1, 0.32, 1), transform 0.25s cubic-bezier(0.23, 1, 0.32, 1);
}

.user-message:hover {
    box-shadow: 0 8px 32px rgba(76, 175, 80, 0.18), 0 3px 12px rgba(76, 175, 80, 0.13);
    transform: translateY(-2px) scale(1.015) perspective(600px) rotateX(1deg);
}

@keyframes chatbotPopIn {
    0% {
        opacity: 0;
        transform: scale(0.96) translateY(18px) perspective(600px) rotateX(6deg);
        box-shadow: 0 0 0 rgba(76, 175, 80, 0);
    }
    80% {
        opacity: 1;
        transform: scale(1.02) translateY(-2px) perspective(600px) rotateX(0.5deg);
        box-shadow: 0 8px 32px rgba(76, 175, 80, 0.13);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0) perspective(600px) rotateX(0deg);
        box-shadow: 0 4px 24px rgba(76, 175, 80, 0.10), 0 1.5px 4px rgba(76, 175, 80, 0.06);
    }
}

.chatbot-message .message-content {
    white-space: pre-line;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-tight);
    color: var(--message-text-bot);
    font-family: var(--font-family-messages);
    font-weight: 400;
    letter-spacing: -0.01em;
}

.user-message .message-content {
    color: var(--message-text-user);
    text-shadow: none;
    font-family: var(--font-family-messages);
    font-weight: 500;
    letter-spacing: -0.01em;
}

.message-timestamp {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-normal);
    letter-spacing: 0;
    text-align: right;
    margin-top: 2px;
    opacity: 0.7;
    font-family: var(--font-family-messages);
}

/* Cart Summary in Message */
.cart-summary {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--background-primary);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--background-secondary);
    border-radius: var(--border-radius-sm);
}

.cart-item-name {
    font-weight: var(--font-weight-medium);
}

.cart-total {
    margin-top: var(--spacing-xs);
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: var(--font-weight-semibold);
}

/* Mobile Message Optimizations */
@media (max-width: 768px) {
    .chatbot-message, .user-message {
        max-width: 90%;
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    .chatbot-message.has-items {
        max-width: 95%;
        padding: var(--spacing-sm) var(--spacing-xs);
    }

    .message-content {
        font-size: var(--font-size-xs);
    }

    .message-timestamp {
        font-size: 10px;
    }

    .cart-summary {
        padding: var(--spacing-xs);
        font-size: var(--font-size-xs);
    }

    .cart-item {
        padding: 4px var(--spacing-xs);
    }
}

/* Enhanced Typing Indicator */
.typing-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--background-secondary);
    border-radius: var(--border-radius-lg);
    width: fit-content;
    max-width: 85%;
    margin: var(--spacing-md) auto var(--spacing-sm) auto;
    animation: messageAppear 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: relative;
    min-width: 120px;
}

.loading-message {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    opacity: 0.9;
    margin-bottom: var(--spacing-xs);
    font-style: italic;
    text-align: center;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.typing-indicator .loading-dots {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    margin-top: var(--spacing-xs);
}

.typing-indicator .loading-dots span {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.7;
    animation: typingBounce 1.4s infinite;
}

.typing-indicator .loading-dots span:nth-child(1) { animation-delay: 0s; }
.typing-indicator .loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator .loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 80%, 100% {
        transform: translateY(0);
        opacity: 0.7;
    }
    40% {
        transform: translateY(-8px);
        opacity: 1;
    }
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Chatbot Input */
.chatbot-input {
    padding: var(--spacing-md);
    background: var(--background-primary);
    border-top: 1px solid var(--border-color);
    position: relative;
}

.input-container {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.input-wrapper {
    flex: 1;
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    background: var(--background-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) var(--spacing-md);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    border: 1px solid transparent;
}

.input-wrapper:focus-within {
    background: var(--background-primary);
    box-shadow: 0 0 0 2px var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

#user-input {
    flex: 1;
    padding: var(--spacing-sm) 0;
    border: none;
    border-radius: var(--border-radius-lg);
    outline: none;
    font-size: var(--font-size-base);
    line-height: 1.5;
    transition: all var(--transition-fast);
    background: transparent;
    color: var(--text-primary);
    min-height: 24px;
    max-height: 120px;
    resize: none;
}

#user-input::placeholder {
    color: var(--text-tertiary);
    opacity: 0.7;
    font-size: var(--font-size-sm);
}

#user-input:focus {
    background: transparent;
}

.send-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-xs);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    will-change: transform, background;
}

.send-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--primary-hover);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all var(--transition-fast);
    z-index: -1;
}

.send-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
    z-index: 1;
}

.send-button:hover {
    background: var(--primary-hover);
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
}

.send-button:hover::before {
    width: 100%;
    height: 100%;
}

.send-button:hover::after {
    left: 100%;
}

.send-button:active {
    transform: scale(0.9) rotate(15deg);
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
}

.send-button:disabled {
    background: var(--text-tertiary);
    cursor: not-allowed;
    transform: none;
    opacity: 0.7;
}

.send-button:disabled::before,
.send-button:disabled::after {
    display: none;
}

.send-button.sending {
    animation: sendPulse 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.send-button.sending::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: var(--primary-hover);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    animation: sendingPulse 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) infinite;
    z-index: -1;
}

@keyframes sendPulse {
    0% { 
        transform: scale(1) rotate(0deg);
        box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
    }
    25% { 
        transform: scale(0.9) rotate(-5deg);
        box-shadow: 0 2px 8px rgba(76, 175, 80, 0.2);
    }
    50% { 
        transform: scale(1.1) rotate(5deg);
        box-shadow: 0 8px 24px rgba(76, 175, 80, 0.5);
    }
    75% { 
        transform: scale(0.95) rotate(-2deg);
        box-shadow: 0 4px 16px rgba(76, 175, 80, 0.4);
    }
    100% { 
        transform: scale(1) rotate(0deg);
        box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
    }
}

@keyframes sendingPulse {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 1;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.7;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

/* Send Button Icon Animation */
.send-button i {
    transition: all var(--transition-fast);
    position: relative;
    z-index: 2;
}

.send-button:hover i {
    transform: translateX(2px) scale(1.1);
    animation: arrowBounce 0.6s ease-in-out;
}

@keyframes arrowBounce {
    0%, 100% { transform: translateX(0) scale(1); }
    50% { transform: translateX(3px) scale(1.2); }
}

.send-button.sending i {
    animation: sendingSpin 0.6s linear infinite;
}

@keyframes sendingSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced Focus State */
.send-button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    transform: scale(1.05);
}

/* Success State Animation */
.send-button.success {
    animation: sendSuccess 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes sendSuccess {
    0% {
        transform: scale(1) rotate(0deg);
        background: var(--primary-color);
    }
    25% {
        transform: scale(1.2) rotate(15deg);
        background: #4CAF50;
    }
    50% {
        transform: scale(0.9) rotate(-10deg);
        background: #66BB6A;
    }
    75% {
        transform: scale(1.1) rotate(5deg);
        background: #81C784;
    }
    100% {
        transform: scale(1) rotate(0deg);
        background: var(--primary-color);
    }
}

/* Error State Animation */
.send-button.error {
    animation: sendError 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes sendError {
    0%, 100% {
        transform: translateX(0) rotate(0deg);
        background: var(--primary-color);
    }
    25% {
        transform: translateX(-5px) rotate(-5deg);
        background: #f44336;
    }
    75% {
        transform: translateX(5px) rotate(5deg);
        background: #f44336;
    }
}

.input-footer {
    margin-top: 6px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.hint {
    font-size: 11px;
    color: var(--text-secondary);
    opacity: 0.6;
    display: flex;
    align-items: center;
    gap: 3px;
}

.hint::before {
    content: '⌘';
    font-size: 12px;
    opacity: 0.5;
}

/* Chatbot Toggle Button */
.chatbot-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--background-primary);
    border: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
}

.toggle-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 50%;
    transition: transform var(--transition-normal);
}

.chatbot-toggle:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.chatbot-toggle:active {
    transform: scale(0.95);
}

.chatbot-toggle:hover .toggle-logo {
    transform: scale(1.05);
}

.notification-badge {
    position: absolute;
    top: 0;
    right: 0;
    width: 16px;
    height: 16px;
    background: #ff3b30;
    border-radius: 50%;
    border: 2px solid var(--background-primary);
    display: none;
    animation: pulse 2s infinite;
}

.notification-badge.active {
    display: block;
}

/* Dark Mode Enhancements */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #4CAF50;
        --primary-hover: #43A047;
        --primary-light: #1B5E20;
        --primary-dark: #2E7D32;

        --text-primary: #FFFFFF;
        --text-secondary: #E0E0E0;
        --text-tertiary: #B0B0B0;

        --background-primary: #1A1A1A;
        --background-secondary: #2C2C2C;
        --background-tertiary: #333333;

        --border-color: rgba(255, 255, 255, 0.1);
        --message-bot-bg: #2a2a2a;
        --message-user-gradient: linear-gradient(135deg, var(--primary-color) 0%, #2e7d32 100%);
    }

    .chatbot-container {
        background: var(--background-primary);
        border-color: var(--border-color);
    }

    .input-wrapper {
        background: var(--background-secondary);
    }

    .input-wrapper:focus-within {
        background: var(--background-secondary);
        box-shadow: 0 0 0 2px var(--primary-color);
    }

    #user-input {
        color: var(--text-primary);
    }

    #user-input::placeholder {
        color: var(--text-tertiary);
    }

    .chatbot-toggle {
        background: var(--background-primary);
        border: 1px solid var(--border-color);
    }

    .notification-badge {
        border-color: var(--background-primary);
    }

    .chatbot-message .message-content {
        color: var(--text-primary) !important;
    }
    .user-message {
        color: var(--message-text-user) !important;
    }

    .chatbot-message {
        background: #23272f;
        border: 1px solid #2e3a4a;
        color: #f3f6fa;
        box-shadow: 0 4px 24px rgba(30, 41, 59, 0.32), 0 1.5px 4px rgba(30, 41, 59, 0.18);
    }

    .user-message {
        background: #388e3c; /* Darker green for dark mode */
        border: 1px solid #2e7031;
        color: #f3f6fa;
        box-shadow: 0 4px 24px rgba(56, 142, 60, 0.22), 0 1.5px 4px rgba(56, 142, 60, 0.13);
    }

    /* Welcome Content Dark Mode Styles */
    .welcome-content {
        background: var(--background-primary);
        border-color: var(--border-color);
        box-shadow: 0 4px 24px 0 rgba(0, 0, 0, 0.3), 0 1.5px 6px 0 rgba(0, 0, 0, 0.2);
    }

    .welcome-content:hover, .welcome-content.active {
        background: var(--background-primary);
        box-shadow: 0 16px 40px 0 rgba(0, 0, 0, 0.4), 0 2px 8px 0 rgba(0, 0, 0, 0.3);
    }

    .welcome-content h3 {
        color: var(--text-primary);
    }

    .welcome-content p {
        color: var(--text-secondary);
    }

    .welcome-extra-info li {
        color: var(--text-secondary);
    }

    .welcome-extra-info .info-label {
        color: var(--primary-color);
    }

    /* Cart Summary Dark Mode Styles */
    .cart-summary {
        background: var(--background-primary);
        border-color: var(--border-color);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 8px 32px rgba(0, 0, 0, 0.3);
    }

    .cart-header {
        background: var(--background-primary);
        border-color: var(--border-color);
    }

    .cart-header::after {
        background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
        opacity: 0.4;
    }

    .cart-close {
        background: var(--background-secondary);
        border-color: var(--border-color);
        color: var(--text-secondary);
    }

    .cart-close:hover {
        color: white;
        border-color: var(--primary-color);
    }

    .cart-items {
        background: var(--background-primary);
    }

    .cart-item {
        background: var(--background-secondary);
        border-color: transparent;
    }

    .cart-item:hover {
        background: var(--background-tertiary);
        border-color: var(--primary-color);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    }

    .cart-item::before {
        background: linear-gradient(90deg, var(--primary-color), transparent);
    }

    .cart-item-quantity {
        background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
        box-shadow: 0 2px 8px rgba(76, 175, 80, 0.4);
    }

    .cart-item-detail {
        background: var(--background-primary);
        border-color: var(--border-color);
        color: var(--text-secondary);
    }

    .cart-item-detail:hover {
        background: var(--primary-light);
        color: var(--primary-color);
        border-color: var(--primary-color);
    }

    .cart-item-total {
        background: var(--background-primary);
        border-color: var(--border-color);
    }

    .cart-item-total:hover {
        background: var(--primary-light);
        border-color: var(--primary-color);
    }

    .cart-total {
        background: linear-gradient(135deg, var(--background-tertiary), var(--background-secondary));
        border-color: var(--border-color);
    }

    .cart-total::before {
        background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
        opacity: 0.6;
    }

    .cart-total-amount {
        background: var(--background-primary);
        border-color: var(--primary-color);
        box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
    }

    .cart-total-amount:hover {
        box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
    }

    .cart-overlay {
        background: rgba(0, 0, 0, 0.6);
    }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    :root {
        --widget-width: 100%;
        --widget-height: 100vh;
    }

    .chatbot-container {
        bottom: 0;
        right: 0;
        border-radius: 0;
    }

    .chatbot-messages {
        padding: var(--spacing-md);
    }

    .chatbot-toggle {
        bottom: 20px;
        right: 20px;
        width: 56px;
        height: 56px;
    }

    .input-container {
        gap: var(--spacing-xs);
    }

    .input-wrapper {
        padding: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) var(--spacing-sm);
    }

    .view-cart-btn-inline {
        width: 40px;
        height: 40px;
        margin-right: var(--spacing-xs);
        overflow: visible;
    }

    .view-cart-btn-inline .cart-icon {
        font-size: 16px;
    }

    .cart-count-badge {
        width: 18px;
        height: 18px;
        font-size: 10px;
        top: -3px;
        right: -3px;
        min-width: 18px;
        min-height: 18px;
    }

    #user-input {
        font-size: var(--font-size-sm);
    }

    .send-button {
        width: 32px;
        height: 32px;
    }

    .send-button:hover {
        transform: scale(1.05) rotate(10deg);
    }

    .send-button:active {
        transform: scale(0.9) rotate(10deg);
    }

    .send-button i {
        font-size: var(--font-size-sm);
    }

    .chatbot-message, .user-message {
        max-width: 95%;
        padding: var(--spacing-md);
    }

    .chatbot-message.has-items {
        max-width: 98%;
        padding: var(--spacing-md) var(--spacing-xs);
    }
}

/* Touch Device Optimizations */
@media (hover: none) {
    .icon-button,
    .send-button,
    .chatbot-toggle {
        cursor: default;
    }

    .icon-button:active,
    .send-button:active,
    .chatbot-toggle:active {
        transform: scale(0.95);
    }

    .input-wrapper:focus-within {
        transform: none;
    }

    /* Touch Device Send Button Optimizations */
    .send-button:hover {
        transform: none;
    }

    .send-button:hover i {
        transform: none;
        animation: none;
    }

    .send-button:active {
        transform: scale(0.95);
    }

    .send-button:active i {
        transform: translateX(1px);
    }
}

/* Scrollbar Styling */
.chatbot-messages::-webkit-scrollbar {
    width: 6px;
}

.chatbot-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
    transition: background 0.2s ease;
}

.chatbot-messages::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Enhanced Item List Styles */
.items-list-container {
    position: relative;
    margin: 16px -12px;
    padding: 0;
    width: calc(100% + 24px);
}

.items-list {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 8px 12px;
    margin: 0;
}

.items-list::-webkit-scrollbar {
    display: none;
}

.item-card {
    flex: 0 0 250px;
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    scroll-snap-align: start;
    position: relative;
    padding: 12px;
    margin: 4px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    min-width: 260px;
    will-change: transform, box-shadow;
    animation: cardSlideIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.item-card:nth-child(1) { animation-delay: 0.1s; }
.item-card:nth-child(2) { animation-delay: 0.2s; }
.item-card:nth-child(3) { animation-delay: 0.3s; }
.item-card:nth-child(4) { animation-delay: 0.4s; }
.item-card:nth-child(5) { animation-delay: 0.5s; }

@keyframes cardSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.item-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.8s ease;
    pointer-events: none;
}

.item-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.05) 0%, transparent 50%, rgba(76, 175, 80, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.item-card:hover {
    transform: translateY(-8px) scale(1.02) rotateX(2deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15), 0 8px 16px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.item-card:hover::before {
    left: 100%;
}

.item-card:hover::after {
    opacity: 1;
}

.item-card:active {
    transform: translateY(-4px) scale(1.01);
    transition: all 0.2s ease;
}

.item-image {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 12px;
    background: var(--background-secondary);
    border-radius: var(--border-radius-md);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.item-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.item-card:hover .item-image {
    transform: scale(1.05);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.item-card:hover .item-image::before {
    opacity: 0.3;
}

.item-image img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    z-index: 2;
}

.item-card:hover .item-image img {
    transform: scale(1.1) rotate(2deg);
    filter: brightness(1.1) contrast(1.05);
}

.item-details {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
    position: relative;
    z-index: 3;
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
    transition: all 0.3s ease;
}

.item-header h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
    flex: 1;
    transition: all 0.3s ease;
}

.item-card:hover .item-header h4 {
    color: var(--primary-color);
    transform: translateX(2px);
}

.item-price {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    white-space: nowrap;
    transition: all 0.3s ease;
}

.item-card:hover .item-price {
    transform: scale(1.1);
}

.item-info-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.info-row {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 16px;
    margin-bottom: 6px;
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    background: var(--background-secondary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.info-row::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(76, 175, 80, 0.1), transparent);
    transition: left 0.6s ease;
}

.item-card:hover .info-row {
    background: var(--background-tertiary);
    transform: translateX(4px);
}

.item-card:hover .info-row::before {
    left: 100%;
}

.info-label {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    min-width: 90px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.item-card:hover .info-label {
    color: var(--primary-color);
    font-weight: 500;
}

.info-value {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.item-card:hover .info-value {
    font-weight: 600;
    transform: translateX(2px);
}

.view-ingredients-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    margin-top: auto;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.view-ingredients-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.view-ingredients-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.4s ease;
}

.view-ingredients-btn:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 24px rgba(76, 175, 80, 0.4);
}

.view-ingredients-btn:hover::before {
    left: 100%;
}

.view-ingredients-btn:hover::after {
    width: 300px;
    height: 300px;
}

.view-ingredients-btn:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
}

.view-ingredients-btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.view-ingredients-btn i {
    transition: all 0.3s ease;
}

.view-ingredients-btn:hover i {
    transform: scale(1.1);
}

/* Mobile Optimizations for Item Cards */
@media (max-width: 768px) {
    .item-card {
        flex: 0 0 240px;
        min-width: 220px;
        padding: 10px;
    }

    .item-card:hover {
        transform: translateY(-4px) scale(1.01);
    }

    .item-image {
        height: 140px;
    }

    .item-header h4 {
        font-size: var(--font-size-sm);
    }

    .item-price {
        font-size: var(--font-size-base);
    }

    .info-row {
        padding: 6px 10px;
    }

    .info-label, .info-value {
        font-size: var(--font-size-xs);
    }

    .view-ingredients-btn {
        padding: 8px;
        font-size: var(--font-size-sm);
    }
}

/* Dark mode adjustments for item cards */
@media (prefers-color-scheme: dark) {
    .item-card {
        background: var(--background-primary);
        border-color: var(--border-color);
    }

    .item-image {
        background: var(--background-secondary);
    }

    .info-row {
        background: var(--background-secondary);
    }

    .item-card:hover .info-row {
        background: var(--background-tertiary);
    }
}

/* Ingredients Styles */
.ingredients-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    max-height: 150px;
    overflow-y: auto;
    padding-right: 4px;
}

/* Custom scrollbar for ingredients content */
.ingredients-content::-webkit-scrollbar {
    width: 3px;
}

.ingredients-content::-webkit-scrollbar-track {
    background: transparent;
}

.ingredients-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.ingredients-content::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* For Firefox */
.ingredients-content {
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.ingredient-item {
    display: inline-block;
    background: var(--background-secondary);
    color: var(--text-primary);
    padding: 3px 6px;
    border-radius: 4px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: ingredientSlideIn 0.4s ease both;
}

.ingredient-item:nth-child(1) { animation-delay: 0.1s; }
.ingredient-item:nth-child(2) { animation-delay: 0.2s; }
.ingredient-item:nth-child(3) { animation-delay: 0.3s; }
.ingredient-item:nth-child(4) { animation-delay: 0.4s; }
.ingredient-item:nth-child(5) { animation-delay: 0.5s; }

@keyframes ingredientSlideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.ingredient-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(76, 175, 80, 0.1), transparent);
    transition: left 0.6s ease;
}

.item-ingredients-back:hover .ingredient-item {
    background: var(--background-tertiary);
    border-color: var(--primary-color);
    transform: translateX(2px);
}

.item-ingredients-back:hover .ingredient-item::before {
    left: 100%;
}

/* Drink Variation Styles */
.drink-variation {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px;
    margin-bottom: 4px;
    transition: all 0.3s ease;
    animation: drinkVariationSlideIn 0.5s ease both;
}

.drink-variation:nth-child(1) { animation-delay: 0.1s; }
.drink-variation:nth-child(2) { animation-delay: 0.2s; }
.drink-variation:nth-child(3) { animation-delay: 0.3s; }

@keyframes drinkVariationSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.drink-variation:hover {
    background: var(--background-tertiary);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.drink-name {
    font-size: 11px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 3px;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--border-color);
    text-transform: capitalize;
    letter-spacing: 0.2px;
}

.drink-variation:hover .drink-name {
    color: var(--primary-dark);
}

.ingredients-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
}

.ingredients-list .ingredient-item {
    margin: 0;
    animation: none;
    animation-delay: 0s;
    font-size: 10px;
    padding: 2px 4px;
    border-radius: 3px;
}

.ingredients-list .ingredient-item:nth-child(1) { animation-delay: 0.1s; }
.ingredients-list .ingredient-item:nth-child(2) { animation-delay: 0.2s; }
.ingredients-list .ingredient-item:nth-child(3) { animation-delay: 0.3s; }
.ingredients-list .ingredient-item:nth-child(4) { animation-delay: 0.4s; }
.ingredients-list .ingredient-item:nth-child(5) { animation-delay: 0.5s; }

/* Dark mode support for drink variations */
@media (prefers-color-scheme: dark) {
    .drink-variation {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .drink-variation:hover {
        background: rgba(255, 255, 255, 0.08);
        border-color: var(--primary-color);
    }
    
    .drink-name {
        color: var(--primary-color);
        border-bottom-color: rgba(255, 255, 255, 0.1);
    }
    
    .drink-variation:hover .drink-name {
        color: var(--primary-light);
    }
}

/* Mobile responsiveness for drink variations */
@media (max-width: 768px) {
    .drink-variation {
        padding: 4px;
        margin-bottom: 3px;
    }
    
    .drink-name {
        font-size: 10px;
        margin-bottom: 2px;
    }
    
    .ingredients-list {
        gap: 1px;
    }
    
    .ingredients-list .ingredient-item {
        font-size: 9px;
        padding: 1px 3px;
    }
    
    /* Mobile ingredients scrolling */
    .ingredients-content {
        max-height: 120px;
        padding-right: 2px;
    }
    
    .ingredients-content::-webkit-scrollbar {
        width: 2px;
    }
}

/* Enhanced Flip Card Styles */
.item-card.flip-card {
    perspective: 1500px;
    padding: 0;
    border: none;
    background: transparent;
    box-shadow: none;
    overflow: visible;
    display: block;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-style: preserve-3d;
    min-height: 340px;
    will-change: transform;
}

.item-card.flip-card.flipped .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    backface-visibility: hidden;
    border-radius: var(--border-radius-lg);
    box-sizing: border-box;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    will-change: transform, opacity;
}

.flip-card-front {
    z-index: 2;
    background: var(--background-primary);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: flipCardFront 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes flipCardFront {
    from {
        opacity: 0;
        transform: rotateY(-90deg);
    }
    to {
        opacity: 1;
        transform: rotateY(0deg);
    }
}

.flip-card-back {
    transform: rotateY(180deg);
    z-index: 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--background-secondary), var(--background-tertiary));
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    animation: flipCardBack 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s both;
}

@keyframes flipCardBack {
    from {
        opacity: 0;
        transform: rotateY(90deg);
    }
    to {
        opacity: 1;
        transform: rotateY(180deg);
    }
}

.flip-card-back::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    opacity: 0.8;
    animation: ingredientsBar 2s ease-in-out infinite;
}

@keyframes ingredientsBar {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

.flip-card-back::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(76, 175, 80, 0.1), transparent);
    transition: left 1s ease;
    pointer-events: none;
}

.item-card.flip-card:hover .flip-card-back::after {
    left: 100%;
}

.item-ingredients-back {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    line-height: 1.7;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    word-break: break-word;
    width: 100%;
    box-sizing: border-box;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    overflow-wrap: break-word;
    white-space: pre-line;
    position: relative;
    z-index: 1;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    animation: ingredientsSlideIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both;
}

@keyframes ingredientsSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.item-ingredients-back:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.ingredients-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.ingredients-header i {
    font-size: 1.2em;
    animation: listPulse 2s ease-in-out infinite;
}

@keyframes listPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.flip-back-btn {
    background: linear-gradient(135deg, var(--background-secondary), var(--background-tertiary));
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.flip-back-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(76, 175, 80, 0.1), transparent);
    transition: left 0.6s ease;
}

.flip-back-btn:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 24px rgba(76, 175, 80, 0.3);
}

.flip-back-btn:hover::before {
    left: 100%;
}

.flip-back-btn:active {
    transform: translateY(0) scale(0.98);
}

.flip-back-btn i {
    transition: all 0.3s ease;
}

.flip-back-btn:hover i {
    transform: translateX(-2px);
}

/* Flip Card Hover Effects */
.item-card.flip-card:hover .flip-card-front {
    transform: rotateY(-5deg);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.item-card.flip-card:hover .flip-card-back {
    transform: rotateY(185deg);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* Touch Device Optimizations for Flip Cards */
@media (hover: none) {
    .item-card.flip-card:hover .flip-card-front {
        transform: none;
    }
    
    .item-card.flip-card:hover .flip-card-back {
        transform: rotateY(180deg);
    }
    
    .flip-back-btn:hover {
        transform: none;
    }
    
    .flip-back-btn:hover i {
        transform: none;
    }
}

/* --- Cart Modal Polished Styles --- */
.cart-summary-modal {
    width: min(340px, 92vw);
    max-width: 95vw;
    min-width: 0;
    padding: 0;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    background: rgba(255,255,255,0.92);
    border: 1.5px solid rgba(76,175,80,0.10);
    overflow: hidden;
}
.cart-header {
    padding: 12px 18px 8px 18px;
    min-height: 38px;
    border-bottom: 1px solid #e6e6e6;
    background: transparent;
}
.cart-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: #222;
    display: flex;
    align-items: center;
    gap: 8px;
}
.cart-items {
    padding: 0;
    background: transparent;
    max-height: 260px;
    overflow-y: auto;
}
.cart-item-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px 9px 18px;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.97rem;
    background: transparent;
}
.cart-item-row:last-child {
    border-bottom: none;
}
.cart-item-quantity-badge {
    background: linear-gradient(135deg, #4CAF50 60%, #43A047 100%);
    color: #fff;
    font-weight: 700;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    margin-right: 4px;
    box-shadow: 0 1px 4px rgba(76,175,80,0.10);
}
.cart-item-name {
    flex: 1 1 40%;
    font-weight: 500;
    color: #222;
    margin-right: 4px;
    text-align: left;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.cart-item-each {
    color: #888;
    font-size: 0.93em;
    background: #f3f3f3;
    border-radius: 7px;
    padding: 1px 7px;
    margin-right: 4px;
    font-weight: 400;
}
.cart-item-total {
    font-weight: 600;
    color: #388e3c;
    font-size: 1em;
    min-width: 48px;
    text-align: right;
}
.cart-total-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 18px 13px 18px;
    background: linear-gradient(90deg, #e8f5e9 60%, #fff 100%);
    font-size: 1.04rem;
    font-weight: 600;
    border-top: 2px solid #e0e0e0;
    border-radius: 0 0 16px 16px;
}
.cart-total-label {
    color: #222;
    font-weight: 600;
}
.cart-total-amount {
    color: #388e3c;
    font-size: 1.08em;
    font-weight: 700;
    background: #fff;
    border-radius: 8px;
    padding: 3px 12px;
    border: 1.2px solid #4CAF50;
    box-shadow: 0 1px 4px rgba(76,175,80,0.08);
}
.cart-empty {
    text-align: center;
    color: #888;
    padding: 28px 0;
    font-size: 1em;
    font-style: italic;
}
@media (max-width: 600px) {
  .cart-summary-modal {
    width: 97vw;
    max-width: 99vw;
    border-radius: 10px;
  }
  .cart-header {
    padding: 8px 8px 6px 8px;
  }
  .cart-item-row, .cart-total-row {
    padding-left: 6px;
    padding-right: 6px;
    font-size: 0.95rem;
  }
  .cart-item-quantity-badge {
    width: 16px;
    height: 16px;
    font-size: 0.92rem;
    margin-right: 3px;
  }
  .cart-total-amount {
    padding: 2px 7px;
    font-size: 0.98em;
  }
}

/* --- Enhanced View Cart Button Styles --- */
.view-cart-btn-inline {
    position: relative;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    overflow: visible;
    z-index: 10;
    margin-right: var(--spacing-sm);
}

.view-cart-btn-inline::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.view-cart-btn-inline:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.3);
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-dark) 100%);
}

.view-cart-btn-inline:hover::before {
    left: 100%;
}

.view-cart-btn-inline:active {
    transform: translateY(0) scale(0.95);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.2);
}

.view-cart-btn-inline:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.view-cart-btn-inline .cart-icon {
    font-size: 18px;
    color: white !important;
    transition: transform var(--transition-fast);
    z-index: 2;
    position: relative;
}

.view-cart-btn-inline:hover .cart-icon {
    transform: scale(1.1);
}

.cart-count-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: #ff4757;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-fast);
    z-index: 3;
    animation: badgePulse 2s infinite;
    min-width: 20px;
    min-height: 20px;
    box-sizing: border-box;
}

.view-cart-btn-inline:hover .cart-count-badge {
    transform: scale(1.2);
    background: #ff3742;
}

@keyframes badgePulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* --- Enhanced Cart Overlay Styles --- */
.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.cart-overlay.active {
    opacity: 1;
}

/* --- Enhanced Cart Modal Styles --- */
.cart-summary-modal {
    position: relative;
    width: min(400px, 90vw);
    max-height: 80vh;
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    transform: scale(0.8) translateY(20px);
    opacity: 0;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 9999;
    margin: auto;
}

.cart-summary-modal.active {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.cart-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.cart-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.1)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.1)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.cart-title {
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 2;
}

.cart-title::before {
    content: '🛒';
    font-size: 20px;
}

.cart-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all var(--transition-fast);
    position: relative;
    z-index: 2;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.cart-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.cart-close:active {
    transform: scale(0.95);
}

.cart-items {
    max-height: 300px;
    overflow-y: auto;
    padding: 0;
    background: var(--background-primary);
}

.cart-items::-webkit-scrollbar {
    width: 6px;
}

.cart-items::-webkit-scrollbar-track {
    background: var(--background-tertiary);
}

.cart-items::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.cart-items::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.cart-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.cart-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary-color), var(--primary-hover));
    transform: scaleY(0);
    transition: transform var(--transition-fast);
}

.cart-item:hover {
    background: var(--background-secondary);
}

.cart-item:hover::before {
    transform: scaleY(1);
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.cart-item-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.cart-item-quantity {
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 2px 4px rgba(76, 175, 80, 0.2);
}

.cart-item-details {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.cart-item-detail {
    background: var(--background-tertiary);
    color: var(--text-secondary);
    padding: 2px var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.cart-item-price {
    font-weight: 700;
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    min-width: 60px;
    text-align: right;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-light);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(76, 175, 80, 0.2);
}

.cart-total {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--background-secondary) 100%);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.cart-total::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(76, 175, 80, 0.05) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.cart-total-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    position: relative;
    z-index: 2;
}

.cart-total-amount {
    font-weight: 700;
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    background: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: 2px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.15);
    position: relative;
    z-index: 2;
    transition: all var(--transition-fast);
}

.cart-total-amount:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.25);
}

/* Empty cart state */
.cart-empty {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    color: var(--text-tertiary);
    font-style: italic;
    background: var(--background-secondary);
    border-radius: var(--border-radius-md);
    margin: var(--spacing-md);
}

.cart-empty::before {
    content: '🛒';
    font-size: 48px;
    display: block;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .cart-summary-modal {
        width: 95vw;
        max-height: 85vh;
        margin: var(--spacing-md);
    }

    .cart-header {
        padding: var(--spacing-md);
    }

    .cart-title {
        font-size: var(--font-size-base);
    }

    .cart-item {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .cart-item-name {
        font-size: var(--font-size-sm);
    }

    .cart-item-details {
        gap: var(--spacing-xs);
    }

    .cart-item-detail {
        font-size: 10px;
        padding: 1px var(--spacing-xs);
    }

    .cart-item-price {
        font-size: var(--font-size-base);
        min-width: 50px;
        padding: var(--spacing-xs);
    }

    .cart-total {
        padding: var(--spacing-md);
    }

    .cart-total-label {
        font-size: var(--font-size-base);
    }

    .cart-total-amount {
        font-size: var(--font-size-lg);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .cart-summary-modal {
        background: #1a1a1a;
        border-color: #333;
    }

    .cart-items {
        background: #1a1a1a;
    }

    .cart-item {
        border-color: #333;
    }

    .cart-item:hover {
        background: #2a2a2a;
    }

    .cart-item-detail {
        background: #333;
        color: #ccc;
    }

    .cart-item-price {
        background: #2a2a2a;
        border-color: #4CAF50;
    }

    .cart-total {
        background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
        border-color: #333;
    }

    .cart-total-amount {
        background: #333;
        border-color: #4CAF50;
    }

    .cart-empty {
        background: #2a2a2a;
        color: #999;
    }
}

/* Touch device optimizations */
@media (hover: none) {
    .cart-item:hover {
        background: transparent;
    }

    .cart-item:hover::before {
        transform: scaleY(0);
    }

    .cart-total-amount:hover {
        transform: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .view-cart-btn-inline {
        box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
    }

    .view-cart-btn-inline:hover {
        box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
    }

    .cart-summary-modal {
        background: #1a1a1a;
        border-color: #333;
    }

    .cart-items {
        background: #1a1a1a;
    }

    .cart-item {
        border-color: #333;
    }

    .cart-item:hover {
        background: #2a2a2a;
    }

    .cart-item-detail {
        background: #333;
        color: #ccc;
    }

    .cart-item-price {
        background: #2a2a2a;
        border-color: #4CAF50;
    }

    .cart-total {
        background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
        border-color: #333;
    }

    .cart-total-amount {
        background: #333;
        border-color: #4CAF50;
    }

    .cart-empty {
        background: #2a2a2a;
        color: #999;
    }
}

/* Touch device optimizations */
@media (hover: none) {
    .view-cart-btn-inline:hover {
        transform: none;
    }

    .view-cart-btn-inline:hover::before {
        left: -100%;
    }

    .view-cart-btn-inline:hover .cart-icon {
        transform: none;
    }

    .view-cart-btn-inline:hover .cart-count-badge {
        transform: none;
    }

    .cart-item:hover {
        background: transparent;
    }

    .cart-item:hover::before {
        transform: scaleY(0);
    }

    .cart-total-amount:hover {
        transform: none;
    }
}